John a



lnited' 51mg;

@wat @Mira HENRY BAKER, OF SAME PLAGE.

Leners Patent N 98,279, daad December 2s, 1869 STEAM-PUMP.

The Schedule referred to ih these Letters Patent and making part of the sameV To all whom 'it may concern:

ne a known that 1', JOHN A. LIDBACK, of Portland, 1n the county ,of Cumberland, and State of Maine, have invented-a new and improved Steam` Pump;4 and I do hereby declare that `the following is a full and exact description thereof, reference being had to the annexed drawings, and to the letters 0f reference marked thereon.

rlhe nature of my invention consists in a pump, A,

p with three cylinders inserted lu 'each other, so that the outside cylinder a constitutes a snction-chamber, cyl indcr b the discnargechamber, and cylinderc vthe chamber for the action of the piston F.

d d d represent the'ports admitting the water into cylinder c from cylinder a.

e c erepresent ports discharging water into cylinder ,1r from cylinder c.

C represents entrance to cylinder a.

D represents outlet of cylinder b.

B VB represent conical oscillating valves at the extremities of cylinder c.

f f f represent the ports in valves B B.

E E represent cylinder-heads, closing in valves B B.

F represents double-acting pist-011, operated by pistou-rods g g, vand playing in cylinder c.

Passing through the cylinder c is the oscillating feed-pump G for the supply of water to the boiler.

The valves B B are attached to, and oscillate by the oscillation of this pump G.

h represents piston-rod to pump G.

li represents the discharge-port of' the feed-pump G.

The general frame-work consists ot two upiight airchalnbers, H and I.

H represents the vacuum-chamber, connecting with suction-chamber a.

I represents air chamber, connecting with forcechamber l).

Q, represents inlet to vacuum-chamber H.

It, outlet from force-chamber b. he arrangement for working the pumps and valves consists of a sash, or frame, K, connected with the Gr,"'and'l driven by steam-pistou rod L.

p tou-rods g g of pump A, and piston-rod h of pumpl Within this frame K are two rockers, l @driving the crank m by the motion of trame K. lM represents balance-wheel ou crank-shaft m and n, valve-connecting rods attached vto balance-wheel M by crank1-pin o.

. N represents cross-head attached to connecting-rods n, and sliding perpendicular'iu spiral slots or guides p, on oscillating feed-pump G, by which the valves B B are made to oscillate.

S represents steam-cylinder.

T represents steam and exhaustpassages.

The operation of the invention is as follows:

When the double-acting-pistonor plunger F asoends, thewater rushes in at Q and C, into and through cylinder a, by ports d d d, into cylinder c, iilling-it with water. cross-head N, with slots or guides, descending, causes the feed-pump G to oscillate, thus oscillating the valves B B attached thereto, thereby closing the ports d l d,

'and opening the ports e e e, by which the water has access into cylinder b, and is forced through the outlet D and R into the hosepipe, or elsewhere.

What I claim as my invention, and desire to secure by Letters Patent, is as follows:

l. A pump with three cylinders enclosed in each other, constituting three chambers connected by'ports,

one for plunger, one for suction, and one for force, substantially as described.

2. The oscillating conical valve B, in combination with cylinders zal), c, as d escribed.

3. The combination of the oscillating feed-pump G, and oscillating conical valve B, substantially as set forth.

4. The spiral guide or slot 11, on feed-pump G, in combination with perpendicularmoving cross-head N, sliding on the same, causing the oscillation of the valves B B, substantiallv as described.

5. The construction and arrangement `of sash KL and rockers l l, substantially as described.

- JOHN A. LIDBACK.

Witnesses Pnnciven Bonner, GEORGE GIFFORD.

When the plunger F returns or descends, the 

